Influence of the bonding substrate in dental composite polymerization stress testing

Boaro, Letícia Cristina Cidreira; Gonçalves, Flávio de Oliveira; Braga, Roberta da Rocha

doi:10.1016/j.actbio.2009.07.003

Cited by 31 publications

(29 citation statements)

References 23 publications

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“…The effect of thermal expansion on the development of PS is less pronounced when the compliance of testing system becomes greater. This could be attributed to, at least in part, the effect of filler content on the PS [15, 17–19, 37]. The PS results of the present study confirm the mathematical model of Fok et al, which indicated that the effect of filler content on PS relies on the compliance of the constraint: less filled composites could produce similar PS as highly filled ones under certain ranges of high compliance [12].…”

Section: Resultssupporting

confidence: 85%

Polymerization stress evolution of a bulk-fill flowable composite under different compliances

et al. 2016

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Section: Resultssupporting

confidence: 85%

Polymerization stress evolution of a bulk-fill flowable composite under different compliances

et al. 2016

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“…This effect can be observed in experimental studies where high-compliance devices tend to overestimate the shrinkage stresses. [28][29][30] The positive correlation between stress and post-gel shrinkage was also consistent with reports in other studies. 23 Weaker correlations were found between the strains measured by the strain gauges and the elastic modulus or post-gel shrinkage values.…”

Section: E88supporting

confidence: 92%

Incremental Filling Technique and Composite Material—Part II: Shrinkage and Shrinkage Stresses

Bicalho

Valdivia

Barreto

et al. 2014

Operative Dentistry

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“…The primary concern is the loss of marginal adaptation and the occurrence of leakage at the tooth/composite interface. Contraction stress has been correlated to marginal leakage in class V cavities by numerous investigators [50–52]. …”

Section: What Tests May Be Appropriate For Predicting Performance?mentioning

confidence: 99%

Resin-based composite performance: Are there some things we can’t predict?

2013

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Objective The objective of this manuscript is to address the following questions: Why do direct dental composite restorative materials fail clinically? What tests may be appropriate for predicting clinical performance? Does in vitro testing correlate with clinical performance? Materials and methods The literature relating to the clinical and laboratory performance of dental composite restorative materials was reviewed. The main reasons for failure and replacement of dental composite restorations provided the guidance for identifying specific material’s properties that were likely to have the greatest impact on clinical outcomes. Results There are few examples of studies showing correlation between laboratory tests of physical or mechanical properties and clinical performance of dental composites. Evidence does exist to relate clinical wear to flexure strength, fracture toughness and degree of conversion of the polymer matrix. There is evidence relating marginal breakdown to fracture toughness. Despite the fact that little confirmatory evidence exists, there is the expectation that clinical fracture and wear relates to resistance to fatigue. Only minimal evidence exists to correlate marginal quality and bond strength in the laboratory with clinical performance of bonded dental composites. Conclusions The use of clinical trials to evaluate new dental composite formulations for their performance is expensive and time consuming, and it would be ideal to be able to predict clinical outcomes based on a single or multiple laboratory tests. However, though certain correlations exist, the overall clinical success of dental composites is multi-factorial and therefore is unlikely to be predicted accurately by even a battery of in vitro test methods.

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Influence of the bonding substrate in dental composite polymerization stress testing

Cited by 31 publications

References 23 publications

Polymerization stress evolution of a bulk-fill flowable composite under different compliances

Polymerization stress evolution of a bulk-fill flowable composite under different compliances

Incremental Filling Technique and Composite Material—Part II: Shrinkage and Shrinkage Stresses

Resin-based composite performance: Are there some things we can’t predict?

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